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Appendix B – Technical Specifications
The clock has the following technical specifications.
Component
Specification
▪ 72-channel satellite receiver
Satellite receiver
▪ L1-C/A (1575.42 MHz) GPS
▪ E1-B/C (1575.42 MHz) Galileo
▪ L1OF (1602 MHz) GLONASS
▪ B1 (1561.098 MHz) BeiDou
▪ -162dBm tracking sensitivity
▪ Single-satellite operation supported
▪ 20ns accuracy (99%, clear sky)
▪ Antenna cable open and short-circuit detection
▪ TNC coaxial connector
▪ TCXO: 0.1ppm typical drift
Internal oscillator
▪ OCXO: 1ppb typical drift
▪ User-defined out-of-bounds alarm
▪ IRIG-B000, 002,004, or 006 encoding
Isolated electrical
outputs
▪ 5V and RS-485/422 signal levels
▪ 15Ω output impedance
▪ Fully isolated from remaining outputs
▪ Protected against short-circuit and overload
▪ BNC coaxial connector (for 5V level signal) and/or 0.2inch (5.08mm) pitch
▪ 820nm wavelength
Fiber-optic outputs
▪ Optical power:
▪ Up to 1600 yards (1500m) multimode optical fiber
▪ ST connectors
▪ IRIG-B120, 122,124, or 126 encoding
Amplitude
modulated outputs
▪ 5Vpp (no load) / 3.2Vpp (50Ω load) output voltage
▪ 25Ω output impedance
▪ BNC connectors
o -15.8dBm into 50/125μm fiber
o -12dBm into 62.5/125μm fiber
57
Kronos Series 3
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